耐碱剂对钢纤维混凝土强度的影响研究  

Effect of Anti-alkaline Additives on the Strength of Steel Fiber Reinforced Concrete

作　　者：朱海堂[1] 范向前[2] 李金章[1] 

机构地区：[1]郑州大学水利与环境学院,河南郑州450001 [2]河海大学力学与材料学院,江苏南京210004

出　　处：《郑州大学学报（工学版）》2011年第1期5-8,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：河南省高校科技创新人才支持计划资助项目(2008HASTIT027);河南省教育厅自然科学基金资助项目(2008A430015)

摘　　要：为研究耐碱剂对钢纤维混凝土基本力学性能的影响,对不同配合比和钢纤维体积率的钢纤维混凝土耐碱剂添加前后的抗折强度和抗压强度进行了试验研究.结果表明:耐碱剂的加入对普通混凝土的抗压强度几乎没有影响,对钢纤维混凝土抗压强度的影响在10%以内;与未掺加耐碱剂的钢纤维混凝土相比,掺有耐碱剂的钢纤维混凝土抗折强度有所提高,且其提高幅度随基体混凝土抗压强度的提高而降低;耐碱剂可以有效提高混凝土和钢纤维混凝土的折压强度比,平均增幅约为8.8%.For studying the influence of the anti-alkaline additives on the basic mechanical properties of steel fiber reinforced concrete,the bending and compressive tests of steel fiber reinforced concrete mixed with or without anti-alkaline additives are carried out.The specimen varied with the water-cement ratio and steel fiber volume fraction.The test results show that the addition of the anti-alkaline additives to concrete has almost no effect on the compressive strength of ordinary concrete,but has the effect less than 10% on the compressive strength of steel fiber reinforced concrete.Compared with steel fiber reinforced concrete without anti-alkaline additives,the bending strength of steel fiber reinforced concrete mixed with anti-alkaline additives is higher and the increasing extent decrease with the increase of compressive strength.In addition,anti-alkaline additives can improve the ratio of bending strength to compressive strength of ordinary concrete and steel fiber reinforced concrete,the average increasing extent of the ratio is about 8.8%.

关 键 词：钢纤维混凝土 耐碱剂 抗折强度 抗压强度 

分 类 号：TU528[建筑科学—建筑技术科学]